Buffing machine



June 10, 1941. A. HORMEL BUFFING MACHINE Original Filed Aug. 18, 1937 3 Sheets-Sheet l a M. RM n my. m m7 NW A M,

June 10, 1941.

A. HORM EL BUFFING MACHINE Original Filed Aug. 18, 1937 3 Sheets-Sheet 2 INVENTOR ATTORNEY June 10, 1941. A. HORMEL 2,245,341

BUFFING MACHINE Original Filed Aug. 18, 1957 3 Sheds-Sheet, 3

' wa- T /J4 INVENTOR ATTORNEY Patented June id, 15941 2,245,341 BUFFING MACHINE N. J., assignor to Na- August Hormel, Hoboken,

Igional-Standard Company,

1 Mi i an a corporation of Original application August 18, 1937, Serial No.

159,730. Divided and this application Decemher 29, 1938, Serial No. 248,199

2 Claims. (01. 15-102) This invention relates to buffing machines, and more particularly to machines of the character intended for use in connection with large sheet metal plates to which oil or other suitable liquid is applied to retard corrosive action, and the plates after being oil-treated are subJected to a bufiing action to cause the oil to penetrate into the metal to as great an extent as possible. This application is a division of my co-pending application, Serial No. 159,730, filed August 13, 1937, now Patent No. 2,149,964.

The object of the present invention is to provide a machine of the character mentioned wherein bufling of the oil-treated surfaces is uniiorrnly and speedily eiiected.

More particularly, the invention contemplates the provision of buffing means, including a plurality of buffing rollers between which the plate to be bufied is passed, and which by both rotary motion and axial movement, bufi both surfaces of the plate simultaneously to cause the oil to penetrate into the pores of the plate.

While I have herein set forth the fact that the means disclosed is particularly adapted to bufiing oil-treated plates, it will be obvious that the mechanism can, without substantial or with no alteration, be employed for buffing sheet materials or elements of a different nature from those described.

In the accompanying drawings, wherein an embodiment of the invention is shown, Fig. l is a side elevation of the improved machine; Fig. 2 is a sectional view through the machine, the View being taken on the line 2-2 of Fig. 5, looking in the direction of the arrows; Fig. 3 is a View of the upper portion of the driving means for the buffing rollers, the view being taken on the line 33 of Fig. 5, looking in the direction of the arrows; Fig. 4 is a detail view showing the adjustable mounting for the buffing rollers; Fig. 5 is a sectional View on the line 5-5 of Fig, 1, looking in the direction of the arrows; and Fig. 6 is a sectional view on the line 6I5 of Fig. 1, looking in the direction of the arrows.

The plate to be buffed is usually oil-treated. by means of any suitable mechanism, an example of such mechanism being shown in my copending application, Serial No. 159,730, and after the plate is so treated and the excess oil removed therefrom, the plate is carried to the buiiing mechanism by means of a belt conveyor, a portion of which is shown at 56. The oilcoated plate is carried by the conveyor to rollers 88 and 89 rotatably mounted in supporting arms 99 secured on and projecting from the side frames 9| and 92 of the machine. These two rollers, between which the plate is moved, act to remove any excess oil from the plate. The

lower roller 89 is driven by a chain 93 in a I manner to be hereinafter explained, and the shaft 95 on which said roller 89 is mounted, carries a gear 95 which meshes with gear 96 on shaft 9! on which the upper roller 88 is secured. The two rollers88 and 89 are thus driven in opposite directions, and not only feed the plate to the right, as viewed in Fig. 2, but aid in the removal of excess oil from the surfaces of the plate. A tray 98 is provided below the lower roller 89 to catch such oil as may drain down into it as the plate passes between the two rollers 88 and 39. The upper roller 83 has its shaft 91 mounted in the bracket Ifill, said bracket being pivoted at 99, the free endof said bracket being spring-pressed downwardly by the spring IilI, the tension of which is adjusted by the screw I52 mounted in the projecting arm I03. The plate next enters between the feed rollers EM and I rotatably mounted in the side frames QI and 92, the upper roller of this pair being spring-pressed as indicated at Hit. Then the plate enters between the bumng rollers H31 and H58, said bufling rollers being followed by the feed rollers Ills and H0; which are followed by a pair of buiiing rollers III and N2, the latter pair of bumng rollers being similar to those shown at Iii'I and I08. After the bufling rollers I I I and I I2 is provided a final pair of feed rollers II3andII4. The lower feed roller in each pair, namely, those indicated at I65, I it and I I i as well as the lower wiping roller 89 are all driven by the chain 93. Said chain is driven from a sprocket IIE'i secured on a shaft III journalled in the side frames 9I and 92. The shaft II'I carries a sprocket I I8 over which a chain I I9 extends, said chain being driven by the sprocket I26 secured on the shaft of motor I2I mounted on the lower or base portion of the machine frame. The shafts of each of the rollers 89, N36, H0 and lit carry a sprocket engaged by the chain $3 in the manner clearly shown in Fig. 2, said chain being also engaged and held taut by the idler I22. Through the drive arrangement shown, all of the rollers 89, I64, III and Hi are driven in the same direction, or clockwise when viewed as in Fig. 2. The buffing rollers It], EH8, III and H2 have a greater peripheral speed than the feed rollers I65, I65, I09, III}, H3 and H 3 and are mounted to have a movement axially or longitudinally as well as a rotary movement and the means for efiecting these two movements will be described. Since the mounting to permit these two movements is similar .for all of the buffing rollers, only one need be described. Roller I01 for example, is mounted on a shaft I23 supported at its opposite ends in the ball bearings I2 1. Each bearing I24 is mounted to slide axially with the shaft through a bushing I25 provided on a plate I26, said plate having an ear portion I21 at one of its ends loosely supported on a stud shaft I29 carried at one end in bearing I281: (Fig. 6-) projecting from the side frame 9|. Extending from the opposite end of said plate is a lug I29 pivotally attached to the end of an adjusting rod I30, said adjusting rod being threaded through a guide I32 and carrying a worm gear ISI engaging a gear I33 on shaft I34 mounted in the frame, said shaft being provided at both of its ends with a hand wheel I35. By manipulation of the hand wheel at either end of the shaft it will be apparent that through the engagement of the gears I3I and I33, the plate I26 may be raised or lowered on its pivot I whereby any one of the buffing rollers I01, I08, III and 2 may be brought to or from its companion roller. Bolts I36 located in the slots I31 in the plates I will hold any of the plates in a fixed position of adjustment. the manner in which shaft I23 is mounted also applies to shaft I39 upon which the upper buffing roller III is secured. Shafts I40 and MI are mounted similarly to shafts I 23 and I39 except that the supporting plates I26 for the former shafts are supported on the stud shaft I30 located directly below shaft I28, as will be apparent from Fig. 3.

The stud shaft I28 has its outer end rotatably The description just given of supported in the bracket I and it carries a sprocket I46 over which a chain I 51 extends. Said chain is driven by sprocket I80 secured on the shaft I I1. Shaft I28 carries a gear I48 which meshes with a similar gear I49 secured on shaft I38. I39 and also with gear I5I on shaft I23, while gear I49 meshes with gear I52 on shaft HM and with gear I53 on shaft I 40. By means of this drive arrangement clearly shown in Fig. 3, the

Gear I48 meshes with gear I on shaft bufiing rollers are rotated in the directions indicated by the arrows. As previously explained, these rollers are also movable axially while rotating. L l

Secured on drive shaft H1 is a gear I55 which meshes with a gear I56 secured on stud shaft I51 rotatably mounted in the side frame 9I. Gear E56 is provided with an eccentric groove I53 in which a roller I 50 on one end of a lever I69 rides. Lever I60 is pivoted on the stud IBI and its opposite end is pivotally connected at I62 to the lower end of a link I63 which has its upper end pivotally connected to an arm I64 extending radially from a rock shaft I65. Shaft IE5 is rotatably mounted in the bearings I66 and I61 secured on the face of the side frame 9|. Secured on the rock shaft I are two rocker arms I88 and IE9. The upper end of rocker arm I58 engages in a groove I10 provided in the bearing I25a at one end of shaft I39 and shown at the right of the machine when viewed as in Fig. 6.

The lower end of the rocker arm engages with a similar groove in the similar bearing I25a of shaft I iI. Similarly, the upper end of rocker arm I69 engages with a groove I10 in the bear- Thus, while the rollers are all rotating, the upper roller in each pair will be moving axially back and forth while the lower roller in each pair will be also moving back and forth, but in a direction opposite to that of its upper companion.

It will be noted that the gears I48 and I49 are of substantial width so that the gears I50, I5I, I52 and I53 can move axially with the shafts on which they are respectively secured without becoming unmeshed from the gears I43 or I49. Accordingly, while the rollers I01, I08, III and H2 are being reciprocated axially, the gears driving these rollers are constantly in mesh and the rollers are, while being reciprocated axially, kept in constant rotation.

Briefly, the operation of the machine is as follows:

The oil-treated plate, carried by conveyor 56 enters between the rollers 88 and 89 which operate against both faces of the plate to remove excess oil therefrom. Feed rollers I04 and I05 feed the plate between the buffing rollers which both rotate and reciprocate axially against both surfaces of the plate, wiping the oil well into the pores of the metal. The last pair of feed rollers, indicated at H3 and H4 moves the oiltreated and buffed plate out of the machine. A tray I15 located below the bufling rollers catches any lint or other material thrown off by the rollers during the bufiing operation.

What I claim is:

1. In a machine of the character described, two pairs of buffing rollers between which an oiled plate is moved, shafts carrying said buffing rollers, each of said shafts carrying a gear, a driving gear mounted between and co-acting with one of said gears from each pair and meshing with the gears on the shafts of each of said rollers, a driven gear meshing with the driving gear and interposed between and meshing with two buffing roller gears constituting the second bufling roller gear from each pair, the driving and driven gears being each mounted on a shaft, the shafts for said driving and driven gears each pivotally supporting a pair of plates, each of said plates receiving the shaft of one of the buffing rollers, and adjusting means for: each plate whereby the plate may be pivotally moved on the shaft which supports it to bring a bufiing roller toward or away from its companion roller in the pair.

2. In a machine of the character described, two pairs of buffing rollers between which an oiled plate is moved, shafts carrying said buffing rollers, each of said shafts carrying a gear, a driving gear mounted between and co-acting with one of said gears from each pair and meshing with the gears on the shafts of each 01' said buffing rollers, a driven gear meshing with the driving gear and interposed between and meshing with two buffing roller gears consisting of the ing for shaft I23 and the lower end of the same arm engages a groove in the bearing for shaft I 20. Thus, when the link I93 is raised by action of the roller I59 in groove I53, shaft I65 will be rocked and the rocker arms I68 and I69 thereon will have their upper ends swung inwardly, I I

or toward the left when viewed as in Fig. '1, this action causing the two upper buifing rollers I01 and I II to be moved axially toward the left. At the same time, the lower ends of rocker arms I68 and IE9, swinging to the right, will move the lower buffing rollers axially toward the right.

second buffing roller gear from each pair, the driving and driven gears being each mounted on a shaft, each of the shafts for the buffing rollers being rotatively carried in a plate, two of said plates being pivotally suspended on the shaft for the driving gear and two of the plates being pivotally suspended on the shaft for the driven gear, independent adjusting means for the four plates whereby each plate may be pivotally moved on the shaft which supports it to bring the buffing roller carried by it to or away from its companion roller,

AUGUST HORMEL. 

